Vaporizer.



E. o. SESSIONS. VvAPoRl'zERl APPLICATION FILED SEPT. 22. i914.

1,215,879. r Patented Feb.13,11917.

Q//Awf/ l Emory 0 Ja'on@ UNITED sTATEs PATENT oEFIoE.

EDSON'O. SESSIONS, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE CUTLER-HAMMERMFG". CO., OF MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN.

VAPORIZER.

,Specification of Letters Patent.

Patented Feb. 13, 1917.

Application filed September 22, 1914. Serial No. 862,892.

Toall whom it may concern:

Be it known that I, EDsoN O. SESSIONS, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented new and useful Improvements in Vaporizers, of which thefollowing is a full, clear, concise, and exact description, referencebeing had to the accompanying drawing, forming a part of thisspecification.

This invention relates to vaporizers.

One of the objects of the invention is to provide" an improved vaporizerin which heat may be applied to the quantity of fluid to be vaporizedwithout heating the whole body of fluid.

Another object of the invention is to provide a vaporizer in which theamount of iluidl influenced by the heater may be regulate f Stillanother object of the invention is to provide a vaporizer with means forregulating the rapidity and amount of vaporization.

Other objects and advantages will appear hereinafter.

The accompanying drawings illustrate an embodiment of the invention, andin said drawings- Figure 1 vation of vention.

Fig. 2 is a partial cross-section and elevation of` a modification ofthe structure shown in Fig. l.

Fig. 3 is a partial cross-section and elevation of another modification.

The construction shown comprises in general a tank l, containing a bodyof fluid 2, having a heater 3 immersed therein.

The tank is provided with an inlet 4 controlled by a float valve 5 Jformaintaining a predetermined fluid level. An overflow 6 may also beemploye Obviously, any other suitable means might be employed formaintaining the liuid at a predetermined level. y

' The heater 3, which also may beef any suitable form or type, is shownas comprising a casing 7 of substantially triangular cross-section,containing standard electric heating units 8. This casing is supportedis a partial cross-section and ele- Ahe vaporizerA embodying the in by aframe 9 in such a manner that the apex, or narrow part of the casing,projects upwardly. Located adjacent the sides of the casing are theheater units 8. The exact locationof said units and their shape may beadjusted to meet varying conditions. The location shown has been founddesirable, since the heat is applied directly to the sides of the casingwhere it is used efliciently.

When the heater is energized, the heat is transmitted directly from thesides of the casing' to the iluid adjacent thereto., It has been foundthat in a heater such as shown, the quantity of fluid heated islocalized in a manner illustrated approximately by the shaded portionsin Fig. l. This localized and comparatively small quantity of fluid isvery quickly heated with a` minimum amount of energy to a temperaturesulficiently high to produce vaporization. course, as rapidly as thefluid adjacent the casing is vaporized, it is replaced by fluid from themain body. However, the heating action as related to the whole body offluid, is confined mainly to the shaded section, so that it is notnecessary to heat a large quantity of fluid before vaporization issecured. The amount of fluid which is acted upon by the heater may beregulated by a variety of means, one of which consists in changing .thelevel of the fluid surrounding the heater,

as illustrated in Fig. 1. l/Vhen the fluid is at the highest levelshown, or when the heater is totally immersed, the largest quantity ofiluid is influenced by the heater.A

This is readily apparent from the shading in Fig. 1. The heating actionis confined approximately t0 the fluid directly above the sides oftheheater. When the fluid level is high, all three of the shaded sections10, 11, 12 will be heated. When the level 13 is used, the fluidrepresented by sections 11, 12, is heated. As the level is furtherdecrease the amount of fluid influenced lby the heater iscorrespondingly decreased, until at the level 14, only the small section12 is heated. The rapidity and amount of vaporization may thus bereadily regulated.

' The same results may be secured by using the construction shown inFig. 2, in which the heater 3 is adjustably mounted, sovthat the heatermay be raised and lowered in the lll llig. 3 illustrates another meansfor se?" curing regulation of the amount of fluid influenced by theheater. The heater casing is made in sections hinged at the top,`whereby the sides may be moved upwardly to the dotted line positionsshown, thereby changing the angle of the heating surface and increasingthe amount of fluid influenced by the heater. The movement of the hingedportions is controlled by an adjustable screwk 21, having threadedengagement with each hinged member in the manner shown.

lllhile ll have shown and described an embodiment of my invention, itshould be understood that such embodiment is not to be construed aslimiting the invention as defined by the spirit and scope of theappended claims.

Having described my invention, what ll claim and desire to secure byLetters Patent iszv 1. il vaporizer having a heater of substantiallytriangular cross-section arranged in a body of liquid with the apex ofthe triangle above the surface of said liquid so that a relatively smallamount of liquid is above the sides of the heater, whereby a portion ofsaid liquid may be vaporized without heating` the whole body thereof.

2. fl. vaporizer having a heater of substantially triangularcross-section arranged in a body of liquid with the apex of the triangleabove the surface of said liquid whereby the relatively small. amount ofliquid above the sides of the heater may be vaporized without heatingthe whole body of liquid and means for regulating the amount of liquidabove the sides of the heater.

3. lin a vaporizer, areceptacle, a body of liquid therein and anelectric heater of sub- ,f stantially triangular cross-section arrangedin the receptacle with "the apen of the triangle above the surface ofthe liquid where-v by, when heat is applied to the heater, therelatively small amount of liquid above the sides of therheater isvaporized without heating the entire body of liquid.

d. A vaporizer having a heater enlarged toward 1ts base, said heaterbeing arranged 1n a body of liquid with the top thereof above thesurface of said liquid so that a relatively small amount of liquid isabove the sides of vsaid heater whereby when heat a nalaat/e u,casinghaving a relatively wide base anda vrelatively narrow top, the sides ofsaid casing joining said base and top having means associated therewithfor applying heat thereto, said casing being mounted in a bodyy ofliquid with the top thereof above the surface of said liquid so that arelatively small amount of liquid is above the sides of the casingwhereby vaporization is secured without heating the rwhole body of iliquid.

7. A vaporizer provided with a heater casing having a relatively widebase and a relatively narrow top, the sides of said casing joining saidbase and top having means associated therewith for applying heatthereto, said casing being mounted in a body of liquid with the topthereof above the surface of said liquid so that a relatively smallamount of liquid is above the sides of the casing, whereby portions ofsaid liquid are vaporized without heating the whole body of liquid andmeans for regulating the amount of liquid above the sides of the heater.

8. lin combination in a vaporizer, a casing of substantially triangularcross-section, electrical heating units in said casing adjacent thesides thereof, said casing being arranged in a body of liquid with theaperL of the casing above the surface of the liquid so that a relativelysmall amount of liquid vis above the sides of the casing, whereby a bodythereof and means for regulating the amount of liquid above the sides ofthe casing. t n n 10. 1n combination 1n a vaporizer, a cas- .ing ofsubstantially triangular cross-section,

electrical heating units in said casing adjacent the sides thereof.,said casing being arranged in a body of liqu1d with the apen ofthecasing above the surface of the liquid l so that a relatively smallamount of liquid lltll nera-5,87@

scribed my name in the presence of two Witnesses.

EDSON 0, SESSNS.

Witnesses:

R. H. VAN NEST, L. C. SCHAUTZ.

